Journal of Shanghai Jiao Tong University (Science) ›› 2019, Vol. 24 ›› Issue (3): 323-327.doi: 10.1007/s12204-019-2062-x

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Analyzing the Influence of Aggregate Properties on Stopping Distance on Truck Escape Ramps

Analyzing the Influence of Aggregate Properties on Stopping Distance on Truck Escape Ramps

QIN Pinpin *(覃频频), CHEN Chuice (陈垂策), GUO Huanliang (郭焕亮), HAN Yaqi (韩亚奇), MENG Qiang (孟强)   

  1. (1. College of Mechanical Engineering, Guangxi University, Nanning 530004, China; 2. School of Automotive Engineering, Hainan Technology and Business College, Haikou 570203, China; 3. College of Automotive Engineering, Jilin University, Changchun 130012, China)
  2. (1. College of Mechanical Engineering, Guangxi University, Nanning 530004, China; 2. School of Automotive Engineering, Hainan Technology and Business College, Haikou 570203, China; 3. College of Automotive Engineering, Jilin University, Changchun 130012, China)
  • Online:2019-06-01 Published:2019-05-29
  • Contact: QIN Pinpin *(覃频频) E-mail: qpinpin@gxu.edu.cn

Abstract: Although there are many studies involving influence of runaway truck entry speed and longitudinal grade on stopping distance, focusing on aggregate properties is scarce. This paper investigates the influence of the aggregate properties such as types of aggregate and river gravel radius on stopping distance through numerical analysis of particle flow code in two dimensions (PFC2D). The software is used to generate stopping distance data for two aggregate types and four group gravel radii under various approaching speeds and grades. The generated data are compared with the testing results of full-scale arrester bed. The simulated finding of this paper implies that types of aggregates and river gravel radii have a significant impact on the stopping distance for runaway truck on escape ramps.

Key words: truck escape ramp| stopping distance| particle flow code in two dimensions (PFC2D)| aggregate property

摘要: Although there are many studies involving influence of runaway truck entry speed and longitudinal grade on stopping distance, focusing on aggregate properties is scarce. This paper investigates the influence of the aggregate properties such as types of aggregate and river gravel radius on stopping distance through numerical analysis of particle flow code in two dimensions (PFC2D). The software is used to generate stopping distance data for two aggregate types and four group gravel radii under various approaching speeds and grades. The generated data are compared with the testing results of full-scale arrester bed. The simulated finding of this paper implies that types of aggregates and river gravel radii have a significant impact on the stopping distance for runaway truck on escape ramps.

关键词: truck escape ramp| stopping distance| particle flow code in two dimensions (PFC2D)| aggregate property

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